adjective
- resembling a feather, as in construction or arrangement; having parts arranged on each side of a common axis: a pinnate branch; pinnate trees.
- Botany. (of a leaf) having leaflets or primary divisions arranged on each side of a common stalk.
adjective
- like a feather in appearance
- (of compound leaves) having the leaflets growing opposite each other in pairs on either side of the stem
adj.1727, from Latin pinnatus “feathered, winged,” from pinna “feather, wing” (see pin (n.)).
- Having parts or divisions arranged on each side of a common axis in the manner of a feather. Ash, hickory, and walnut trees have pinnate leaves.